5 PM UPDATE: Winds were adjusted upward in the latest advisory to 45 mph, and forecasters said Hermine would top out at 70 mph — but possibly achieve hurricane strength — when it makes landfall late Thursday in the Florida panhandle. The forecast track was again adjusted to the west, but Northeast Florida was under a tropical storm watch.

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3 PM UPDATE: Hurricane Hunter aircraft found tropical storm force winds in the Gulf of Mexico depression and have upgraded it to Tropical Storm Hermine. It was drifting north at 2 mph with winds of 40 mph.

But potential impacts on South Florida have diminished, according to the National Weather Service in Miami, and a flood watch that had been in effect until midnight was canceled.

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11 AM UPDATE: Tropical Depression Nine became stationary in the Gulf of Mexico, the National Hurricane Center said, but it should begin moving toward North Florida’s Gulf Coast later today.

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ORIGINAL POST: Tuesday’s heaping helping tropical moisture delivered the most rain to the area since mid-May, and forecasters say more wet weather is on the way. A flood watch was in effect through midnight for Palm Beach County.

Palm Beach International Airport picked up 2.03 inches of rain on Tuesday, the heftiest single-day total since May 18, when 2.32 inches fell. It was also the heaviest official rainfall total in the state, according to National Weather Service reports.

Other area rainfall totals from Tuesday: 1.72 inches in Palm Beach; 0.99 of an inch in Miami; 1.37 inches in Fort Lauderdale; 1.13 inches in Naples; and 1.3 inches in Pompano Beach.

The main instigator of the wet weather, Tropical Depression Nine, continued to blow up impressive amounts of convection in the Gulf of Mexico. But as of this morning it still hadn’t strengthened to tropical storm status, although tropical storm warnings — and a hurricane watch — were posted for parts of Northwest Florida and the panhandle.

The system was expected to muscle up to at least tropical storm strength later today as it makes its way toward the North Florida coast near the Big Bend area.

Rain chances in Palm Beach are 70 percent today and stay in the 50-60 percent range through the early part of the holiday weekend.

The Labor Day forecast is for a 40 percent chance of rain with partly sunny skies and a high near 86 and a low near 80.

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RECORD WATCH: Here’s a category of temperature record we haven’t seen this summer: Fort Lauderdale tied a mark for the coolest high temperature ever recorded on Aug. 30. The high was only 83, which matched the low maximum temperature set 84 years ago in 1932. The high in Naples was only 80, which matched the coolest maximum temperature for the date set in 2011.

The high at Palm Beach International Airport Tuesday was 84 — just a degree shy of the coolest high for the date, 83 set in 1937. But it was the coolest high temperature at PBIA since May 27, when it was 83. PBIA’s low of 74 was the coolest temperature since June 19.

Tuesday was only the sixth day this summer (June 1-Aug. 31) with overall below normal temperatures for the date.